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PDF Viewing Archiving 300 URBAN STORM WATER QUALTIY AND EFFECTS UPON RECEIVING WATERS COPYRIGHT @ BY THE NETHERLANDS ORGANIZATION FOR APPLIED SCIENTIFIC RESEARCH TNO, 1986 PREFACE The progress in the construction of waste water treatment plants, in legislation and in the prevention of water pollution has shifted the proportions of sources of pollutants discharged in surface waters. Increasingly attention is being paid to the role of combined sewer overflows and storm water discharges in water pollution. Historically design and control of sewers and pumping stations has been based on quantitative considerations. Substantial experience on rainfall, on transformations during run-off and transport in sewers and on overflows is available and quantitative descriptions are being developped. Comparatively little is known of the quality aspects and managers and administrators often need answers urgently. Hence in several countries research programmes are being carried out in which the water quality of rainfall, run-off from paved areas in separate and combined sewer systems and in overflows is measured and analysed. Moreover we see an increasing attention for the effects of these discharges upon the receiving waters, not only with respect to the bacteriology and chemistry of water and sediments but including the influence upon the structure and function of ecosystems. The contributions to this Conference clearly illustrate the complexity of the problem to assess the systems behaviour and the variety of techniques used by scientists and technologists to generate appropriate answers. We wish to thank the authors for their contributions and CHO-TNO and the EWPCA for the support given to the organisers of this Conference. On behalf of the Programme Committee, Lambertus Lijklema, Chairman Frans van de Ven , Secretary PROGRAMME COMMITTEE: M, Desbordes Universitg du Languedoc France J.B. Ellis Middlesex Polytechnic UK A. ~Zttle Bayer Staatsministerium Germany des Innern N.B. Johansen COWI-consult Denmark L. Lijklema Agricultural University The Netherlands (chairman) G. Svenseon Chalmers University of Sweden Technology F.H.M. v-d. Ven Ri jkswaterstaat, The Netherlands (Secretary) Institute for Inland Water Management and Waste Water Treatment ORGANIZING COMMITTEE: H.J. Colenbrander TNO Committee on The Netherlands Hydrological Research H. Ehrhardt European Water Pollution The Netherlands Control Association J.C, Hooghart TNO Committee on The Netherlands Hydrological Research E.J.L. Hotke-Staal International The Netherlands Agricultural Centre CONTENTS PAPERS - ROLE OF HIGHWAY GULLIES IN DETERMINING THE WATER QUALITY IN 1 SEPARATE STORM SEWERS C.J. Prat, G.E.P. Elliot and G.A. Fulcher - THE VARIABILITY OF SOME CONTROLLING PARAMATERS FOR TOXIC 13 POLLUTANTS DURING STORM RUNOFF EVENTS D.M. Revitt, J.B. Ellis, G.M. Morrison, G. Svensson and P. Balmer - URBAN WATER QUALITY IN LELYSTAD: RAINFALL AND RUNOFF FROM 25 SELECTED SURFACES C.H. van Dam, M. Scholten and F.H.M. van de Ven - THE IMPACT OF WET WEATHER now ON THE HYDROGEN SULPHIDE 39 FORMATION IN COMBINED SEWERS T. Hvited-Jacobsen and P. Halkjaer Nielsen - DISCHARGES OF POLLUTANTS FROM DUTCH SEWERAGE SYSTEMS; 53 AN OVERVIEW OF MEASUREMENTS, EXPERIENCES AND RESULTS G. Onderdelinden and J.L. Timmer - VARIATION OF COMBINED RUNOFF QUALITY AND RESULTING POLLUTANT 7 1 RETENTION STRATEGIES W.F. Geiger - AN INTRODUCTORY ANALYSIS OF FACTORS AFFECTING THE CONCENTRATION 93 OF POLLUTANTS IN THE FIRST FOUL FLUSH OF A COMBINED STORM SEWER SYSTEM L.G. Pearson, R.C. Thornton, A.J. Saul and K. Howard - THE HYDRAULIC PERFORMANCE OF TWO ON-LINE STORAGE CHAMBERS IN COMBINED SEWER SYSTEMS R.C. Thornton, A.J. Saul, K. Howard and L. Pearson - EFFECTIVINESS OF STORM SEWAGE OVERFLOW STRUCTURES IN HANDLING GROSS POLLUTING SOLIDS D.J. Balmforth - DETENTION BASINS AND THEIR CAPABILITIES FOR THE RETENTION OF POLLUTANTS G. Stotz and K. Krauth - EFFICIENCY OF STORM WATER OVERFLOW TANKS V. Krejci, W. Munz and W. Gujer - EFFECTS OF DETENTION BASINS (DISC) ON THE COMPOSITION OF STORM WATER AND COMBINED SEWER OVERFLOW M. Dohman, J. Trlnkler and M. Weyand - CONTROL OF WASTE WATER DISCHARGES WITH FIXED CONTROL ALGORITHMS AND THE EFFECT ON RECEIVING WATERS J. Martens - THE EFFECTS OF COMBINED SEWER OVERFLOWS UPON RECEIVING WATERS K. Howard, A.J. Saul, R.C. Thornton and L.G. Pearson - COMBINED SEWER OVERFLOWS; STATISTICS ON OXYGEN DEPLETION P. Harremols, T. Hvitved-Jacobsen and N.B. Johansen - THE USE OF WATER QUALITY MODEL QUAL I1 ON MICROCOMPUTER F.L. Manuzi, P. Vanouplines, J. Marivoet and A. van der Beken - MODEL-BASED ASSESSMENT OF EFFECTS OF STORM WATER OVERFLOW 221 MANAGEMENT ALTERNATIVES UPON LOW DISSOLVED OXYGEN OCCURRENCE IN THE RECEIVING STREAM G. van Straten, P.H. van Riel and J.C. Heins - STORM EVENT IN THE GLATT RIVER VALLEY; I DOCUMENTATION OF RESULTS W. Gujer, V. Krejci, R. Schwarzenbach and J. Zobrist - STORM EVENT IN THE GLATT RIVER VALLEY; 25 1 I1 DATA ANALYSIS BY USE OF ADYNAMIC MATHEMATICAL MODEL P. Reichert and 0. Wanner - A DETERMINISTIC MODEL FOR DO AND SS IN A DETENTION POND RECEIVING COMBINED SEWER OVERFLOWS R.H. Aalderink, A.P. Benoist and L. Lijklema - EFFECTS OF COMBINED SEWER OVERFLOWS ON THE MACRO-EVERTEBRATES 283 COMMUNITIES IN A DETENTION POND G.D. Willemsen and J.G.M. Cuppen - STRUCTURE AND FUNCTIONING OF PLANKTONIC AND EPIPHYTIC 297 COMMUNITIES IN A POND RECEIVING COMBINED SEWER OVERFLOWS R.M.M. Roijackers and J.H. Ebbeng - BIOLOGICAL EFFECTS OF STORMWATER DISCHARGES IN URBAN CANALS 311 C. Roos POSTERS - MODELING TOTAL SEWAGE WATER DISCHARGE TO A REGIONAL TREATMENT 327 PLANT J.V. Witter and J.N.M. Stricker - THE POLLUTION OF STORMWATER RUNOFF FROM SPECIFIC PAVED AREAS 331 AND ROOFS A.L.B.M. van Campen, S.A. Oldenkamp, F.G. Sciics and J.A. Woelders - DETERMINATION OF URBAN STORM WATER QUALITY H. Birrer, A. Holenweg and L. Krayenbiihl - THE APPLICABILITY OF IMPROVED OVERFLOWS IN THE NETHERLANDS 339 P.G. Kruitwagen, J. Zuidervliet and M. Brandjes - QUALITY MANAGEMENT OF SURFACE WATER, RECEIVING STORM WATER 345 DISCHARGES IN AMSTEL- EN GOOILAND Y. Scheffer-Ligtermoet and P.J.T. Verstraelen - THE U.K. RIVER BASIN MANAGEMENT (RBM) PROGRAMME R.J. Henderson PAPERS ROLE OF HIGHWAY GULLIES IN DETERMINING WATER QUALITY IN SEPARATE STORM SEWERS C. J. Pratt Dept. of Civil & Structural Eng. G. E. P. Elliott Dept. of Physical Sciences G. A. Fulcher Dept. of Civil & Structural Eng. Trent Polytechnic, Nottingham, UK Abstract Data are presented from field and laboratory studies of water quality and pollutant attachment to sediments in road- side gully pots in a residential catchment. Results of correlation analysis of water quality parameters are presented and the effect of discharge to a separate storm sewer via gully pots are illustrated for two events, one displaying enhanced suspended solids concentration due to resuspension of pot basal deposits, the other showing improved quality of outflow as a result of sedimentation within the gully. The importance of pH variation in deter- mining the exchange of heavy metals from liquor to sediment phases of pollutant transport, and vice versa, is demonstrated. 1 Introduction The paper presents results of a partly completed three year research programme undertaken to investigate the influence of gully pots on the quality of urban storm water discharge from highway surfaces to a separate storm sewer system. Typically in the UK, gullies in residential areas receive storm runoff from some 200m2 highway surface. Below the inlet grating at the highway surface is a gully pot of some 1001 capacity, which provides a water seal to the downstream sewer connection and is intended to trap sediments, prevent- ing their forward transmission through the sewer system. The investigation reported set out to determine in what ways the discharge quality of highway runoff, with its associated sediments and pollutant loads, was affected by passage through the gully pot prior to entering the sewer system. Three aspects were studied in some detail: gully pot liquor and deposited basal sediment quality; storm runoff quality at inflow and outflow from the gully pot; and factors affecting pollutant transfer to and from sediment-associated and disolved phases. The study has been based on three cul-de-sacs in a well-main- tained, residential housing estate at Clifton, Nottingham. The three sub-catchments selected were all similar in land use but had highway slopes which ranged from 0.5 to 5.5%. The sites had been locations of overland flow research (Pratt & Henderson (1981)),and the catchment as a whole had been previously studied to determine general sediment washoff (Pratt & Adams (1981)) and stormwater discharge quality (Fletcher et al. (1978); Fletcher & Pratt (1981)). 2 Research Programme 2.1 Systematic sampling: liquor The research has built up a data set of results of 26 water quality variables, including 12 heavy metals (Table 1) from weekly sampling, undertaken in three periods between May '84 and April 1985. Liquor samples were collected from twelve gully pots, four from each of the three sub-catchments. The gullies were all located at the closed end of each cul-de-sac with two on either side of the highway. The sampling programme was conducted over a twelve week period during the Table 1 Parameters analysed in the gully liqour programme Water Quality Parameters Heavy Metals (mg/l) Temperature ('C) Sodium (Na) Dissolved oxygen (mg/l) Potassium (K) PH (pH unit) Iron (Fe) BOD5 (mg/l as BOD) Lead (pb) COD (mg/l as COD) Calcium (ca) Conductivity (microsiemen/cm) Magnesium (Mg) Suspended solids (mg/l) Zinc (zn) Alkalinity (mg/l as CaC03) Manganese (Mn Total hardness (mg/l as CaC03) Copper (cu 1 Phosphate (mg/l as P) Cadmium (Cd) Sulphate (mg/l as SO4) Nickel (Ni Chloride (mg/l as Cl) Chromium (Cr 1 Nitrate (mg/l as N) Ammonia (mall as N) summer 1984 and over two further five week periods during winter 1984/85. A one litre sample was taken at a depth of half the depth of standing water in the pot chamber.
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